Plastic composition foe



' tity of result.

" rr- STATES PATENT OF ICE,

EARL v. WAGNER, or scnanron, PENNsYLvA Ia'AssIGNon "worm: WAGNER FIREBRICK COMPANY, OF HELENA, MONTANA.

PLASTIC COMPOSITION FOR MAKING PAVING-BRICK, BUILDING-BRICK, AN D BUILDING- TILE.

1,193,952. Specification of Letters t t- Patented Aug. 8, 1916'. NoDrawing. Application filed Ja uary 8, 1916. Serial N6. 70,984. i i i Toalt-whome't may concern: gypsum, lime, and similar solids have been I Beit known that L EARL V. WAonER,-ac1t1 treated with a compoundcontainingprozen of the United States, residing at Scran- 7 toxid oflead, sulfate of zinc, alum, and

ton, in the county of Lackawanna and State" silicate of soda, for thepurpose of making of Pennsylvania, have invented a new and usefulPlastic Composition for Making, Paving-Brick, Building-Brick, andBuilding- Tile, of Which-the following is a specifi cation. i

Coal ash l .99 cu. yd, i I Crude fibrous asbestos" .01-cu.yd. Water 85gals.

It is not intended to confine the discovery here applied for to the useof the ingredients specified in the proportions specified, as theseproportions may in some cases be advamtageously varied, producingsubstantial iden- Grind and mingle the coal "ash with the crude fibrousasbestos in a mixing machine of approved type, then add the water andremix thoroughly. The plastic massis then pressed through a pressingmaehineand cut to size desired by means vofa cuttingma:

chine, after which-it is subjected to repressure to induce propercohesion and to destroy laminations; Remove toelosed drying oven and dryforsix tox eight hours'at a temperature of 500 to (300 degrees Fahren'heit. Remove to closed baking oven where temperature is gradually raisedto .2200 to' 2400 degrees Fahrenheitaml' bake for seven to eight days;then graduallycoolwhen the finished prmluetwill result.

I am aware that, prior to my invention and discovery, coalashesandasbestos fiber have been eomliinedfwith lime and plaster ofParis; and with-lime, plaster, of Paris and alum; and with lime, plasterof Paris and marl, for the purpose of making artiiieial. stones andplastering materials; that asbestos has beeirmixed withvariousproportions of a nmnber of ')ulve.rulent substances such asgypsum, lime, chalk, lire clay, graphite, pumice, and ashes, for makingasbestos reulenlsaud building materials; and that ashes, hydrauliccement, sand,

artificial marbles or stones; but in these instances I'am not aware thatany such combinations have been burned to producebricks- The presence oflime, plaster of Paris, ee-

ment, and similar substanees'having cohesive and binder properties inthe compositions referred to, 1f subyected to the )urnmg processesnecessary to make bricks having great cohesive, crushing and tensile,

properties, will cause "the molded masses to become incohesive orbrittle and fragile or to disintegrate. ()n the other hand, if a smallpercentage of crude fibrous asbestos be added toand thoroughly mixedwith finely ground coal ashes and then moistened with water, the massthus obtained may be readily molded into bricks in the manner specified,which, when dried and burned asindicated,

will result in the production of bricks lighter in Weight and greater infire resisting qualities than ord nary commercial bIlCkS. They willalsopossess great crushing and tensile strength. I am-not aware that theingredition for making paving brick, lulildinglu'iek.

and, building 'tile, consisting of coal ash,

.957 cubic yard; crude fibrous asbestos, .01

cubic yard; water, 35 gallons mixed, molded and burned, substantially asdescribed.

- EARL v. WAGNE Witnesses: I I t I -IloMnu C. llu'ronms, DAV). J. Jones,3

